Method and device for producing formic acid formates and use...

C - Chemistry – Metallurgy – 07 – C

Patent

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Details

C07C 51/09 (2006.01) C07C 51/41 (2006.01) C07C 53/02 (2006.01) C07C 53/06 (2006.01)

Patent

CA 2495340

The invention relates to a method for producing formic acid formates, whereby (a) formic acid methyl ester is partially hydrolysed with water; (b) formic acid methyl ester and methanol are separated by distillation from the reaction mixture obtained in step (a), forming a current containing formic acid and water; (c) the current obtained in step (b), containing the formic acid methyl ester and optionally methanol, is converted into a current containing formate and water, by (i) reaction with a basic compound having a pKa value of the corresponding acid of the corresponding dissociation step of = 3, measured at 25 ~C in an aqueous solution, in the presence of water, and (ii) separation by distillation of the methanol; and (d) the current obtained in step (b), containing formic acid and water, and the current obtained in step (c), containing formate and water, are combined to form a mixture containing the formic acid formate and water. The invention also relates to a device for producing said formic acid formates and to the use of the same.

Procédé de production de formiates d'acide formique qui consiste (a) à hydrolyser partiellement du méthylester d'acide formique avec de l'eau, (b) à extraire par distillation, du mélange de réaction obtenu à l'étape (a), du méthylester d'acide formique et du méthanol, avec formation d'un courant contenant de l'acide formique et de l'eau, (c) à transformer le courant contenant le méthylester d'acide formique et éventuellement le méthanol, formé à l'étape (b), par (i) mise en réaction avec un composé basique ayant une valeur pK¿a? de l'acide correspondant de l'étape de dissociation correspondante de = 3, mesurée à 25 ·C dans une solution aqueuse, en présence d'eau et (ii) par séparation du méthanol par distillation, en un courant contenant du formiate et de l'eau et (d) à mélanger le courant contenant de l'acide formique et de l'eau formé à l'étape (b) et le courant contenant du formiate et de l'eau formé à l'étape (c) pour obtenir la formation d'un mélange contenant le formiate d'acide formique et de l'eau. La présente invention concerne également un dispositif de production desdits formiates d'acide formique, ainsi que leur utilisation.

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